What is the air quality trend in Dachang?

Over the past 8 days, Dachang had an average AQI of 52 based on station measurements. The worst day was 2026-07-21 with AQI 67.

How is Dachang air quality measured?

Air quality in Dachang is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Dachang, China

Name: Dachang Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Dachang, China.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

122h

PM2.5 Station

122h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	56	29–82	16.4 µg/m³	4h	1
2026-07-21	67	20–107	20.0 µg/m³	16h	2
2026-07-20	52	22–94	14.7 µg/m³	16h	2
2026-07-19	51	17–88	13.8 µg/m³	22h	2
2026-07-18	57	8–91	16.6 µg/m³	19h	2
2026-07-17	43	25–67	10.9 µg/m³	16h	2
2026-07-16	53	12–162	15.3 µg/m³	20h	2
2026-07-15	38	21–67	9.7 µg/m³	9h	1

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